Fix for bug 3170708: Default values support for MULTI INSERT
Fix for bug 3170708: Default values support for MULTI INSERT

XC was complaining about DEFAULT values
when doing a multiple INSERT.

Ex:
create table rep (a int, b int, c int default 444) distribute by round robin;
insert into rep (a, b) values (44,55), (3,4);

Patch written by Benny Wang

snaga/postgres-xl,yazun/postgres-xl,pavanvd/postgres-xl,postmind-net/postgres-xl,techdragon/Postgres-XL,kmjungersen/PostgresXL,pavanvd/postgres-xl,snaga/postgres-xl,techdragon/Postgres-XL,zeroae/postgres-xl,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,arcivanov/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,snaga/postgres-xl,snaga/postgres-xl,techdragon/Postgres-XL,ovr/postgres-xl,pavanvd/postgres-xl,postmind-net/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,zeroae/postgres-xl,zeroae/postgres-xl,snaga/postgres-xl,kmjungersen/PostgresXL,postmind-net/postgres-xl,arcivanov/postgres-xl,kmjungersen/PostgresXL,pavanvd/postgres-xl,zeroae/postgres-xl,oberstet/postgres-xl,yazun/postgres-xl,yazun/postgres-xl,postmind-net/postgres-xl,oberstet/postgres-xl,oberstet/postgres-xl,Postgres-XL/Postgres-XL,oberstet/postgres-xl,zeroae/postgres-xl,postmind-net/postgres-xl,pavanvd/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,kmjungersen/PostgresXL,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,ovr/postgres-xl,yazun/postgres-xl,Postgres-XL/Postgres-XL,techdragon/Postgres-XL,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,yazun/postgres-xl,oberstet/postgres-xl